diff --git a/messageviewer/autotests/viewergrantleethemesupporttest.cpp b/messageviewer/autotests/viewergrantleethemesupporttest.cpp
--- a/messageviewer/autotests/viewergrantleethemesupporttest.cpp
+++ b/messageviewer/autotests/viewergrantleethemesupporttest.cpp
@@ -49,6 +49,8 @@
                                                                   this));
     viewer->show();
     QVERIFY(QTest::qWaitForWindowExposed(viewer));
+
+    delete viewer;
 }
 
 QTEST_MAIN(ViewerGrantleeThemeSupportTest)